JD-2The JD-2 switch is a compact, sensitive air pressure switch made of rugged die-cast aluminum. It features an adjustable set point, set point indication, and visible ON-OFF indicator to provide the accuracy and reliability you need. Available in five range scales.







​VERSA PLUS AIR The Versa Plus Air is a highly accurate air pressure switch that monitors positive, vacuum, or differential air pressure. The integrated contacts make or break circuits to a desired set point. The omega spring design provides repeatability and accuracy. It is compact, easy to install, and available in various mounting configurations.






​VERSA PRO AIR The Versa Pro Air is a compact, sturdy air pressure switch made with a durable plastic electrical enclosure and die-cast aluminum inlet base. It accurately monitors positive, vacuum, or differential air pressure and makes or breaks the electrical control circuit when pressure rises above or drops below the set point






​​.VERSA PLUS GAS The Versa Plus Gas is a gas pressure switch that accurately monitors pressure and breaks the electrical control when pressure rises above or drops below the desired set point. It is made with a durable plastic enclosure and a die-cast aluminum inlet base.







​​VERSA PRO GAS The Versa Pro Gas is a gas pressure switch that accurately monitors pressure and breaks the electrical control circuits when pressure rises above or drops below the desired set point. Made with a durable plastic enclosure and die-cast aluminum inlet base, the switch is sturdy and dependable.








​SMD The SMD is a sensitive air differentiator that is compact, easy to install, accurate, and reliable. Made of sheet metal, this switch monitors positive, vacuum, or differential air pressure.







​​SML The SML air pressure switch features a sensitive diaphragm to detect changes in air pressure. Easy to install and reliable, this switch is available in two range scales and with an optional neon light indicator.







​SMR The SMR air differential switch features a convenient manual reset button and three range scales. It's made of sheet metal and is compact and easy to install.







​​MODEL A - SINGLEThe Model A - Single is a high-low gas pressure switch that monitors pressure and cuts off the electrical control circuit when pressure rises above or drops below the desired set point. The high and low gas pressure settings are adjustable. All models are available in reset or recycle type.

Our complete line of air and gas pressure switches offer the opportunity for customization. We can preset the required setting and save time during the assembly. The mounting brackets can also be custom designed to fit your unique equipment requirements. Our Switches are compact, accurate and reliable, made of rugged die-cast aluminum, durable plastic, and sheet metal.

Our available ranges for air pressure switches are from .07" W.C. up to 35" W.C. Our available ranges for gas pressure switches are from .5" W.C. to 15 PSI.

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Parts for all your HVAC needs
call us at 718-358-1100 or come see us at:
 53-13 Van Dam Street, Long Island City, NY 11101 
order@amafsupplyinc.com


Just a small representation of what we carry !